參數(shù)資料
型號(hào)： LTC1992IMS8#TRPBF
廠商： Linear Technology
文件頁數(shù)： 21/42頁
文件大?。?/td> 0K
描述： IC AMP/DVR I/O FULLY DIFF 8-MSOP
標(biāo)準(zhǔn)包裝： 2,500
放大器類型： 差分
電路數(shù)： 1
輸出類型： 差分，滿擺幅
轉(zhuǎn)換速率： 1.5 V/µs
增益帶寬積： 3.2MHz
電流 - 輸入偏壓： 2pA
電壓 - 輸入偏移： 250µV
電流 - 電源： 700µA
電流 - 輸出 / 通道： 30mA
電壓 - 電源，單路/雙路(±)： 2.7 V ~ 11 V，±1.35 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）
供應(yīng)商設(shè)備封裝： 8-MSOP
包裝： 帶卷 (TR)
LTC1992 Family
28
1992fb
Single-Ended to Differential Conversion
One of the most important applications of fully differential
amplifiers is single-ended signaling to differential signaling
conversion. Many systems have a single-ended signal that
must connect to an ADC with a differential input. The ADC
could be run in a single-ended manner, but performance
usually degrades. Fortunately, all of basic applications
circuits shown in Figure 4, as well as all of the fixed gain
LTC1992-X parts, are equally suitable for both differential
and single-ended input signals. For single-ended input
signals, connect one of the inputs to a reference voltage
(e.g., ground or mid-supply) and connect the other to
the signal path. There are no tradeoffs here as the part’s
performance is the same with single-ended or differential
input signals. Which input is used for the signal path only
affects the polarity of the differential output signal.
Signal Level Shifting
Another important application of fully differential ampli-
fier is signal level shifting. Single-ended to differential
conversion accompanied by a signal level shift is very
commonplace when driving ADCs. As noted in the theory of
operation section, fully differential amplifiers have a com-
mon mode level servo that determines the output common
mode level independent of the input common mode level.
To set the output common mode level, simply apply the
desired voltage to the VOCM input pin. The voltage range
on the VOCM pin is from (–VS + 0.5V) to (+VS – 1.3V).
Figure 3. Fully Differential Amplifier Signal Conventions (Ideal Amplifier and Perfect Resistor Matching is Assumed)
–
+
1992 F03
RIN
RFB
VOCM
RFB
B
–B
–VIN
–A
VINCM
VOUTCM
VINDIFF
4AVP-PDIFF
A
+VIN
2AVP-P
= VINDIFF = +VIN – –VIN
2BVP-P
DIFFERENTIAL
INPUT VOLTAGE
= VINCM =
INPUT COMMON
MODE VOLTAGE
+VOUT =
+ VOCM ; VOSCM = 0V
+VIN – –VIN
+VIN + –VIN
2
= VOUTDIFF = +VOUT – –VOUT
DIFFERENTIAL
OUTPUT VOLTAGE
–VOUT
+VOUT
LTC1992
VOUTDIFF
4BVP-PDIFF
1
2
RFB
RIN
= VOUTCM =
OUTPUT COMMON
MODE VOLTAGE
+VOUT + –VOUT
2
()
–VOUT =
+ VOCM ; VOSCM = 0V
–VIN – +VIN
1
2
RFB
RIN
VOUTDIFF = VINDIFF
RFB
RIN
rN ≈ (0.13nV/√Hz)
VAMPCM =
VINP + VINM
2
CMRR =
; +VIN = –VIN
ΔVAMPCM
ΔVAMPDIFF
OUTPUT BALANCE =
ΔVOUTCM
ΔVOUTDIFF
eNOUT =
WHERE: eNOUT = OUTPUT REFERRED NOISE VOLTAGE DENSITY
eNIN = INPUT REFERRED NOISE VOLTAGE DENSITY
(RESISTIVE NOISE IS ALREADY INCLUDED IN THE
SPECIFICATIONS FOR THE FIXED GAIN LTC1992-X PARTS)
+ 1
RFB
RIN
VOUTCM = VOCM
VAMPDIFF = VINP – VINM
VOSCM = VOUTCM – VOCM
()
VOSDIFFOUT = VOSDIFFIN
+ 1
RFB
RIN
()
INM
INP
RIN RFB
RIN + RFB
()
√eNIN2 + rN2
APPLICATIONS INFORMATION
相關(guān)PDF資料
PDF描述
ISL28274FAZ IC INSTR/OP AMP RRIO SGL 16-QSOP
TMF12-221-1 CIRCUIT BRKR THERMAL 1A 1POLE
44769-1402 CONN HDR RCPT 14POS 3MM VERT PCB
TMF12-221-4 CIRCUIT BRKR THERMAL 4A 1POLE
LTC1992IMS8#TR IC AMP DIFF I/O ADJ OUT 8-MSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1998CS6 制造商:Linear Technology 功能描述:Comparator and Voltage Reference 6-Pin TSOT-23
LTC1998CS6#PBF 制造商:Linear Technology 功能描述:Comparator and Voltage Reference 6-Pin TSOT-23
LTC1998CS6#TR 功能描述:IC COMP/PREC ADJ REF TSOT23-6 RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件
LTC1998CS6#TRM 功能描述:IC DETECT VOLT PR LOBATT SOT23-6 RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件
LTC1998CS6#TRMPBF 功能描述:IC DETECT VOLT PR LOBATT SOT23-6 RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:Impedance Track™ 功能:燃料，電量檢測(cè)計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.4 V ~ 2.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:帶卷 (TR) 產(chǎn)品目錄頁面:1020 (CN2011-ZH PDF) 配用:BQ27350EVM-ND - BQ27350EVM 其它名稱:296-21665-2
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*